MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic Chemistryp-Block (group 13 and 14)Introduction to p-block Elements
Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because:
A.oxygen forms a protective oxide layer on aluminium✓ Correct
B.aluminium is a noble metal
C.iron undergoes reaction easily with water
D.iron forms mono and divalent ions
Explanation
Aluminum is more reactive metal than iron but it has high corrosion resistance than iron. This is due to the formation of the aluminium oxide layer 2 3 Al O which is non-porous and rigid. Therefore, the correct option is a.